Self-heating soldering-tool.



A. HERMANN.

SELF HEATING SOLDBRING TOOL.

APPLIOATION FILED Nov. so. 190s.

Patented July 26, 1910.

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A. HERRMANN.

SELF HBATINGSOLDERING TooL. APPLICATION FILD NOV. 30, 1908.

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ALBERT HERRMANN,.OF CHICAGO, ILINOIS.

SELF-HEATING SOLDERINGr-TOOL.

Specification of Letters Patent.

Patented July 26, 1910.

Application filed November 30, 1908. Serial No. 465,128.

To all whom t may concern:

Be it known that I, ALBERT HERRMANN, a citizen of the United States,residing at Chicago, county of Cook, and State of Illinois, haveinvented certain new and useful Improvements in Self-Heating Soldering-Tools, of which the following is a specification.

My invention relates to that type of tools in which is employed ahydro-carbon as a fuel, and more particularly to that class of the sameknown as self heating soldering irons, in which the soldering points aremaintained at a constant temperature by means of heat applied to themcontinuously while in use. y

The object of my invention is to provide a tool of the charactermentioned which will be of such improved construction as to make itpossible to readily detach the soldering point and its holder ifdesired, in which event the tool may be used as a blow torch.

A further object of my invention is to provide a tool of the charactermentioned which may be readily and easily manipulated and of durableconstruction.

A still further object of my invention is to provide a tool of the classmentioned which will be of the highest possible eiliciency, and whichwill be comparativelyl simple of construction hence of low cost tomanufacture.

Otherobjects will appear hereinafter.

With these objects in view my invention consists generally in ahandle-forming fuel reservoir communicating with th`e forward extremityof which is a gas generator, and to the forward extremity of saidgenerator is secured a hydro-carbon vapor burner.

My invention further consists in a soldering point supporting frameadapted to be detachably secured to said generator in such a manner asto cause the flame issuing from the burner to impinge directly upon thesoldering point secured in said supporting frame.

My invention further consists in certain details of construction andarrangement of parts all as will be hereinafter more fully described andparticularly pointed out in the claims.

' My invention will be more readily understood by reference to theaccompanying drawings forming a part of this specification, and in whicFigure 1 is a side elevation of the preferable formof my devicecomplete. Fig. 2 is a vertical longitudinal section through the same,the soldering point and the supporting frame therefor being detached.Fig. 3 is an enlarged sectional detail of the air pump provided in thefuel reservoir. Fig. 4 is a detail side elevation of the generator. Fig.5 is a vertical longitudinal section thereof. Figs. 6, 7, and 8 aredetails of parts of said generator. Fig. 9 is a perspective view of thetubular burner. Fig. 10 is an enlarged perspective view of the solderingpoint supporting frame detached. Fig. 11 is a vertical longitudinalsection of the soldering point housing embodied in my invention. Fig. 12is'an end elevation thereof. Figs. 13 and 14 are perspective viewsof'difl'erent forms of soldering points which may be employed, and Fig.15 is a perspective view of the priming pan detached.

Referring now to the drawings l indicates the preferably cylindricalhandle of my tool the same being hollow, forming a fuel reservoir. Anopening 2 provided with a plug 3 facilitates filling said reservoir withthe gasolene or other liquid fuel used. Centrally positioned andsecured, preferably threaded in the rearward extremity of saidreservoir, the same being locked in position by a lock nut 4 is an airpump 5. Said pump consists of the casing 6 in which Vis reciprocallymounted the piston rod 7, to the inner extremity of which is suitablysecured a preferably semi-cylindrical piston head 8. A hand piece 9provided at the outer extremity of said rod 7 serves an obvious purpose.When not in use said hand piece 9, and hence the piston rod 7 may belocked in position by a cap 10 adapted to be threaded upon theexteriorly projecting end portion 6 of said casing 6, covering said handpiece. The inner extremity of said casing 6 is covered by a cap 11provided with a perforation 12.

13 is a partition or head provided with an opening 14. A disk valve 15held in position by a coiled spring 16 being adapted to normally closesaid opening 14, obviously preventing any of the liquid fuel containedin the reservoir 1 from entering the pump.

Secured, preferably threaded, in the forward end portion of the member 1is a gas generator 17. Resting in the rearward cy- -lindrical chamber 18of said generator, the

same extending into the reservoir 1 is a suitable wick 19. Said wick ispreferably wound upon a wire member 2O so as to facilitate readilyinserting or removing said wick. A tubular spring member V21 tightlyfitting the inner end portion of the membery 17 and rearwardlyarojecting therefrom the same encircling anld slightly clamping the wick19serves as a means of holding said wick in position in said chamber 18.Leading from said chamber 18 isa vapor passage 22.

23 indicates a needle valve the stem 24 thereof being threaded into aprojection 17 of the member 17. By rotating said stem 24, by means ofthe hand piece 25, it is obvious that said valve may be seated orlunseated, the same being adapted when in seated position to close theopening 26 leading from said passage 22. A packing 27, preferably ofasbestos, held in position by a cap 28 threaded upon said projection17of the member 17 facilitates an air-tight connection between said valvestem and the member 17. Leading from said opening 26 is a passage 22',in the enlarged forward portion of which is threaded a tubular plug 29,the forward port forming opening 29 of which is very small. Provided atand extending across the rearward end of the plug 29 is a screen 30, thepurpose of the same being to strain all liquid fuel passed through thesame thereby preventing clogging of said port 29 in the plug 29.Detachably secured, preferably threaded, upon the forward end portionofthe member 17 is a Bunsen burner tube 31 preferably frusto conical inshape, the same being provided with the draft openings 32.

33 indicates a substantially U-shaped soldering point supporting frame,the rearward end portions of the arms 34, and the lower end ortions ofthe depending arms 35 of whicii and 37 respectively. Said arms 34 and 35are at such a distance apart as to be adapted to fit snugly upon thegenerator 17 in which position said members are locked thereto by meansof removable pins 38 resting in the perforations 36 and 87 and extendingthrough perforations 39 provided in said member 17 `lVhen in positionupon the generator 17 said arms 35 also rest upon bosses 40 formed uponeither side of said member 17, thereby facilitating a more rigidconnection between said parts. 41 indicates Va priming pan the samebeing suspended from the member 33 by' means of a wire member 42, theinwardly extending end portions 43 of which engage perforations 44provided in said member 33.

45 indicates soldering points, slightly different forms of which areshown in Figs. 13 and 14, 46 indicating'a housing therefor. The shanks47 of said soldering points 45 are provided with perforations 36' whenthe same are in position in said housing rest snugly in the circularslot 48 provided in said housing 46, the end portions thereof beingadapted to rest in the circular slot 49 provided for the reception ofthe same in the member 33, they being securely held therein by means ofa set screw 50. Said member 46 is provided preferably di rectly beneaththe circular slot 4S wit-h a circular opening-51 into'which, when saidmember is in position, projects the outer end portion of the burner 31,the shanks 47 of the soldering points 45 being so formed as to positionsaid points directly in front of said opening and hence directly infront of said burner, resulting in an obvious advantage.'

In practice the reservoir is filled Vwith gasolene through the opening 2therein. By means of the air pump 5 the liquid fuel in the reservoir isplaced under pressure. Fuel is placed in the priming pan 41 and ignited.The ignition of said fuel causes the heating of the generator,consequently causing the passage, upon opening the valve 23, ofcombustible vapor from the opening or port 29, which igniting from theflame issuing from the pan obviously causes the rapid heating of thesoldering point, the flame issuing from the burner impinging directlyupon the same. Before the air pressure developed within the reservoirhas been dissipated the handle has become sufficiently heated to causethe highly volatile gasolene contained therein to itself maintain apressure suflicient to expel the vapor at a suitable velocity. With suchconditions the priming pan may be detached, it being of no further useuntil it is again desired to light the torch. Because of the provisionof the wick 19 it is immaterial in which position the tool is held, aconstant flow of fuel, enough to maintain a flame, being because of suchprovision positively insured. As before stated the soldering points mayif desired, be removed in which event the tool may be ef`- ciently usedas a blow torch.

Vhile I have shown what I deem to be the preferable form of my device Ido not wish to be limited thereto as there might be many changes made inthe details of construction and arrangement of parts without departingfrom the spirit of my invention.

Having described my invention what I claim as new and desire to secureby Let.- ters Patent is:

1. The combination in a gasolene soldering iron, of a combined gasolenevreservoir and handle portion, a pump carried by said reservoir andhandle portion for charging the same with air under pressure, a tubefixed to and communicating with the reservoir and handle portion andhaving a minute discharge aperture in its end remote therefrom and alsohaving 'apertured lugs at its opposite sides and at different points inits length, a valve for controlling the passage of gasolene through thesaid tube, a burner tube connected to and extending from the first namedtube and tapered toward its upper end, an iron-holder having portionsdisposed at opposite sides of and connected to the apertured lugs on thefirst named tube and also having a vert-ical bore, a set screw bearingin the iron-holder and arranged to extend to the said bore, an ironhaving a shank disposed in the bore of the holder and engaged by saidset screw, and a shield for the iron having a depending tube snuglyreceiving the burner tube and also having a depending sleeve receivingthe shank of the iron.

2. The combination in a gasolene soldering iron, of a combined gasolenereservoir and handle portion, a pump carried by said reservoir andhandle portion for charging the same with air under pressure, a tube xedto and communicating with the reservoir and handle portion and having aminute discharge aperture in its end remote therefrom, a valve forcontrolling the passage of gasolene through said tube, a burner tubeiixed with respect to and extending from the first named tube andtapered toward its upper end, an iron-holder fixed on the iirst namedtube and having a vertical bore, a set screw bearing in the iron-holderand arranged to extend to said bore, an iron disposed above the burnertube and having a shank arranged in the bore of the holder and engagedby said set screw, and a shield for the iron, having a depending sleevesnugly receiving the burner tube and also having a depending sleevereceiving the shank of the iron.

3. The combination in a gasolene soldering iron, of a burner tubetapered to its upper end, a valved tube for supplying the burner tubewith gasolene, an iron-holder fixed on the valved tube, an iron having ashank detachably connected to the ironholder, and a shield connected tothe shank of the iron and having a depending sleeve snugly receiving theupper portion of the burner tube.

4. In adevice of the class described, the combination of a handleforming reservoir; a gas generator communicating with said reservoir; aburner provided at the forward extremity of said generator; means forregulating the flow of fuel through said generator; a soldering pointprovided with a. supporting shank; a soldering point housing adapted toreceive said point and provided with an opening adapted to permit thepassage of the shank of said point and an opening adapted to receive theend of said burner; and means on said generator for engaging said pointshank to secure said housing and point in position, substantially asdescribed.

5. In a device of the class described, the combination of a handleforming reservoir; a gas generator communicating with said reservoir; aburner provided at the-forward extremity of said generator; means forregulating the flow of fuel through said generator; a soldering pointprovided with a supporting shank; a soldering point housing adapted toreceive said point and provided with an opening adapted to permit thepassage of the shank of said point and an openmg adapted to receive theend of said burner; a support removably secured to said generator andprovided with an opening adapted to receive said point shank; and a setscrew for securing said shank in said opening, substantially asdescribed.

6. In a device of the class described, the combination of ahandle-forming reservoir; a gas generator communicating with saidreservoir; a burner provided at t-he forward extremity of saidgenerator; means for regulating the flow of fuel through said gen-Verator; a soldering point provided with a supporting shank; a supportsecured to said generator and provided with a socket and set screwadapted to receive and secure said supporting shank; and a housingadapted to receive and encompass said soldering point on four sides, thesaid housing being provided with an opening adapted to permit thepassage of said point shank and an opening adapted to receive the end ofsaid burner, substantially as described.

In testimony whereof I have signed my name to this specification in thepresence of two subscribing witnesses.

ALBERT HERRMANN.

Witnesses:

I-InLnN F. LILLrs, JANET E. HOGAN.

